Have methi seeds soaked in butter milk it will help. I use paree Prima sanitary pads its good.

Turmeric in milk or in hot water is good for cramps.

Homemade kada made from kitchen herbs works best for period pain. For heavy flow use Paree prima sanitary pads. These pads are extra wide and comfortable to use.

Ask her to have jaggery and ajwain it will help to reduce pain and keep hot water bag. And she can use Paree Prima for heavy flow, as it has long wings and cotton layered thin sheet. Absorbency is good . Super soft.